My computer has an i7 3930k and a Titan X, and 8 gigs of ram. When I play arma 3 I get roughly 25-30 fps on the lowest settings. I know it's not a server problem seeing as this happens on every server and singleplayer. All my other games run perfectly with over 60 FPS. I know the game is badly optimized but even still, there is really no excuse for a game to run below 30 on the fastest video card around. Plus, my friends all tell me they are getting ~50 fps.